BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY: Mesoscale eddies at the Antarctic margins:  Linking cross-shelf e
 xchange with Southern Ocean overturning - Andrew Thompson\; Caltech
DTSTART:20130702T100000Z
DTEND:20130702T110000Z
UID:TALK46057@talks.cam.ac.uk
CONTACT:Dr Andrew Meijers
DESCRIPTION:Previous idealized investigations of Southern Ocean circulatio
 n have omitted its connection with the Antarctic continental shelves\, inc
 luding its important role in bottom water formation.  The contribution of 
 mesoscale eddies in setting the stratification and overturning circulation
  in the Antarctic Circumpolar Current (ACC) is well established\, yet thei
 r role in cross-shelf exchange of water masses remains unclear. We propose
  a residual -mean theory that elucidates the connection between Antarctic 
 cross-shelf exchange and overturning in the ACC\, and the contribution of 
 mesoscale eddies to the export of Antarctic Bottom Water (AABW). We motiva
 te and verify our theory using an eddy-resolving process model of a sector
  of the Southern Ocean. The strength and pattern of the simulated overturn
 ing circulation strongly resemble those of the real ocean\, and are closel
 y captured by our residual-mean theory. Over the continental slope barocli
 nic instability is suppressed\, and so transport by mesoscale eddies is re
 duced. This results in a strong sensitivity of the deep overturning streng
 th to changes in near-shore winds.\n
LOCATION:British Antarctic Survey\, Room 330B
END:VEVENT
END:VCALENDAR